1 files changed, 1 insertions, 0 deletions
diff --git a/apropos.c b/apropos.c
index c0221418..392bb381 100644
--- a/apropos.c
+++ b/apropos.c
@@ -25,6 +25,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "apropos_db.h"
 #include "mandoc.h"